Direct Substitution

Question 1

Find the derivative of f(x) = 11x² + 5x at x = 9. (6 points)

a. 243

b. 223

c. 203

d. -243

Question 2

Find the derivative of f(x) = 9x + 5 at x = 7. (6 points)

a. 0

b. 5

c.7

d. 9

Question 3

Find the derivative of f(x) =  at x = 2. (6 points)

a. -4

b. -1

c. 1

d. 4

Question 4

Find the derivative of f(x) =  at x = -4. (6 points)

a. 4 divided by 9

b. 16 divided by 9

c. 9 divided by 16

d. 9 divided by 4

5.	Find the limit of the function by using direct substitution. (6 points)
3Does not exist-30